emaa as a healing agent for mendable high temperature epoxy amine thermosets

Varley, Russell and Charve, F 2012, emaa as a healing agent for mendable high temperature epoxy amine thermosets, Composites Part A: Applied Science and Manufacturing, vol. 43, no. 7, pp. 1073-1080, doi: 10.1016/j.compositesa.2012.01.018.

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Title emaa as a healing agent for mendable high temperature epoxy amine thermosets
Author(s) Varley, RussellORCID iD for Varley, Russell orcid.org/0000-0002-3792-1140
Charve, F
Journal name Composites Part A: Applied Science and Manufacturing
Volume number 43
Issue number 7
Start page 1073
End page 1080
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2012-07
ISSN 1359-835X
Keyword(s) Smart materials
Damage tolerance
Lay-up (manual/automated)
Summary The encapsulation of the copolymer, polyethylene-co-methacrylic acid (EMAA) by polyetherimide (PEI) is used here to aid function as a healing agent in high temperature epoxy/amine composites. Importantly, PEI protected EMAA during processing while not inhibiting healing when required. Triethylenetetramine (TETA) and diethylene toluene diamine (DETDA) were used to functionalise EMAA further facilitating healing in some circumstances. Carbon fibre composites containing diglycidyl ether of bisphenol A epoxy (DGEBA) and DETDA were fabricated at 150 °C with variously modified EMAA and healing was evaluated according to mode I crack opening and interlaminar shear strength. No healing was observed for the unmodified EMAA, yet when coated with PEI, mode I loads and interlaminar shear strengths were restored to about 100% and 50% of their original values respectively. Functionalising EMAA showed further improvement for mode I failure though no trend was observed for ILSS.
Language eng
DOI 10.1016/j.compositesa.2012.01.018
Field of Research 0912 Materials Engineering
0913 Mechanical Engineering
0901 Aerospace Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2012 Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30089319

Document type: Journal Article
Collections: Institute for Frontier Materials
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